Prognostic value of left atrial size in hypertensive African Americans undergoing stress echocardiography

Table 3 Multivariate predictors of all-cause mortality

	Reference cut-point for Abn. LA Diam			Best cut-point for Abn. LA Diam
	Chi-square 102			Chi-square 107
Predictor	Wald	HR (95%CI)	P value	Wald	HR (95%CI)	P value
Age (per 10 yr)	11.4	1.40 (1.15-1.71)	0.001	8.2	1.34 (1.10-1.64)	0.004
Tobacco	11.9	2.61 (1.51-4.49)	0.001	11.9	2.59 (1.51-4.44)	0.001
Heart failure	6.4	1.92 (1.16-3.20)	0.012	4.7	1.76 (1.05-2.94)	0.031
LVH	17.6	2.54 (1.64-3.93)	<0.001	10.5	2.14 (1.35-3.39)	0.001
Abnormal stress	5.9	1.79 (1.12-2.86)	0.015	4.6	1.67 (1.04-2.68)	0.033
Dobutamine study	8.5	2.09 (1.27-3.43)	0.004	8.9	2.12 (1.29-3.47)	0.003
LA index ≥ 2.40	–	–	NS	1	1	1
LA index ≥ 2.05	1	1	1	4.9	1.73 (1.06-2.82)	0.027

¹Variable not included in calculation.

Column (Reference cut-point for Abn. LA Diam) demonstrated a multivariate analysis using the reference cut-point of 2.40 cm/m² for defining an abnormal left atrium and column (Best cut-point for Abn. LA Diam) demonstrates a multivariate analysis using the best cut-point of 2.05 cm/m². ABN: Abnormal; DIAM: Diameter, LVH: Left ventricular hypertrophy; LA index: Left atrium diameter index (cm/m²).